Kickback dump for mine cars



May 4, 1948. I M. K. MARLOWE E AL KICKBACK DUMP FOR MINE CARS Filed July 25, 1945' 2 Sheets-Shem. 1

May 4, 1948. MARLOWE ETAL 2,441,077

KICKBACK DUMP FOR MINE CARS Filed July 25, 1945 2 Sheets-Sheet 2 a rvQCAMLo b 17m K/yan'lru/z and lIIIIlllIlllllllllllllllllllllllllllllll Patented May 4, 1948 1 i UNITED KICKBACK DUMP FOR MINE cans Mark Marlowe and Lawrence Daugherty,

Lexingt on, Ky.

Application July 25, 1945, Serial No. 606,950

This invention relates to mechanism for handling mine cars of the end dump type after dumping operation.

The present development relates to improvements in kickback mechanism for end dump mine cars and comprehends a structure for use in connection with that type of mine car dump including a vertically tilting rack section, whereby the car after unloading is urged to its proper station.

The main object of the invention is to provide a manually controlled mechanismfor propelling by power the mine car after the unloading operation from its position on the tilted track section through suitable mechanism to'a selected track area for further handling.

This invention includes theuse of a carriage arranger for movement with the loaded car onto the tilted track section and through the unloading operation, the carriage being shiftable from a suitable source of controlled power for returning the car and propelling the same with suificient force to cause its movement through pre-arranged switching mechanism for continued use.

A further object of the invention is the provision of fixed bumper means for absorbing the shock during both the unloading movement of the mine car and during removal of the car from the tilted track section through operation of the power kickback. I

Other objects of this invention reside in the novel arrangement of the power mechanism, the control of the clutch between the power mechanism and the kickback carriage, the feedingand control of the power cableandthe control means v 12 Claims. (01. 214-47) versely extending trunnions 3 are mounted in the for the tilted track section during its movement from car unloading to normal position. Reference will be had' to theaccompanying drawings forming a part of this-specification and wherein like characters of reference designate corresponding parts throughout the severalviews, in which Figure 1 is a longitudinal vertical apparatus, and

Figure 2 is a top plan view. a Portions of the supporting structure and oertain details conventional in the art have been omitted from the present disclosure inasmuch as they form no part of the present invention and are subject to change according to conditions at the dump, the types of cars used and facilities available. In the present disclosure the dump floor is shown at I having the pivoted dump section 2 supported for vertical tilting movement section of. the

on the transverse pivots orJtrunnions 3. .Referfixed bearings B at each side of the tilted track section 2 on the adjacent fioor sections which are provided by recessing the floor 'I in the usual manner. Clamping means I confine the bearing.

block 6 against outward movement, these clamping members 1 being bolted to the floor by bolts 8 or other suitable means. The usual horns 9 are provided to overlie the track sections 5, these horns being mounted on the shafts l0 positioned outwardly of and adjacent to the track sections 5. Buff springs Ii function with these horns and their carrier rods ID to absorb the shock of movement of the mine car both in its loaded and unloaded conditions and during tilting to dump position at which time the shock obviously is at the maximum. Switch sections l4 are provided in the usual manner for permitting the return of the unloaded mine car from the tilted track section back to the yard. As is usual in such assemblies the uprights l5 are connected by the usual cross member which supports the frame It, the purpose of which is to limit the movement of the car during its unloading and to operate the discharge end gate.

Generally the elements heretofore described are conventional in the art and may be changed to accommodate difl'erent mine equipment.

Extending medially of the tracks 4-5 there is provided a framework which includes the two spaced tracks or guideways it each having outer upwardly extending flanges I]. These track sections may be formed of inwardly spaced parallel arranged angle irons and are connected togetherat their ends by cross bar 18 and end plate IS. The structure of these track elements may be modified to include a guard flange for preventing a tendency by the kickback mechanism to swing free of its bottom track surface. At a point which will permit a sufilcient travel of the kickback carriage there is provided stop or cushion means in the form of double-ended sliding plungers 20 headed at each end as at 2| and guided by the medialpartition 22 formed with central openings through which the plungers travel. Springs 23 are provided at each side of the partition so that the springs are subject to compression upon movement of the plungers 20 V in either direction under shock from movement wheels a suflicient distance to provide room for;

the spaced parallel bumpers 28, these bumpers 28 being encased in the wall 29 and'being provided with the coil springs 38 for absorbing shock,

It will be noted that the frame member extends through the front and rear walls of the carriage and provides a base for this structure. rear end of the frame member 25 is the crass frame 3!, this frame member 3| having aligned end wheels 32 providedfor supportingthis rear frame member on the track 16.. The sword 35 15 hinged to the depending spaced'ears; 36 fixed to the lower face, of thecross plate it, this sword being preferably bifurcated at itsupper endjpore. tion'to permit the arrangement therebetweenof the grooved pulley 3.1 over which the. cable 38 travels, the, cable being connected to the. tail piece or crossbar 3! of the kickback carriage- At the guideway 63 to retard the movement of the sword during operation of the mechanism.

Normally in handling coal it is customary to move the coal from the mines to a suitable dump and for this purpose mine cars are provided of different types, and these mine cars are coupled to form substantial trains for movement from the. mine to the. dump. The loaded individual We ormin he n. ar d m d o at a time by means of various kinds of unloading anechanism. One of the best known types of mechanism for the unloading of mine cars is that typeus-ing end dump ears which are shifted on tiltable track sections. The train is moved tea position so that a single car can be uncoupled and shifted to the tilting track section, this tiltingtrack section being unbalanced outwardly aubraking of themovement of the. swordtfi is generally conventional in the art. Normally the sword element is clamped by a cam-for. friction elementto'secure the same and the tilting track section against swinging movement Ihntil .re-. leased by theoperator In vthepresent assembly the carnmed ei-rtremity of the lever 53 bindsor clamps. the sword against free movement. until the lever 41 is, moved to, create slack in, the cable 58 and. thus permits the weight toswingv the leyer 6!]. downward freeing its cam-end from its clamping action with the. sword. Upon the reverse movement of the lever 4.1; the. eamming is permitted by' the joint action of the weight 61, and the movement of the sword. It will benoted that the operation of the cam or brakelever 68 is by movement of the samelever 41 that controls the. operation of the kickback mechanis and thus. the sword movement. and brake. operation are suits ably associated. The specifictype of sword clamp is not important except insofar as its association with the kickback mechanism is concerned.

A. sourceof power, preferably an electricrnotor, is provided for driving through the vi-belt 4B and pulley H the shaft 4 2, The shaft 4-2 is mounted. in bearings on the -standards 45:1: extending upwardly fromjthe base it. On the shaft 42 is a multiple plate clutch. i5. and the cable drum 46 aboutwhich-the cable .33 connected' to the carriage iswound and unwound; The clutch 45 isnormally engaged and is released by movement of the lever 47f pivotedatfifl to; the floor through a suitablemountingjfifi. q e e t the e .w o e a e. th cra s arm. 49 through the link .saandthe .crdss am: &1. through link Eilwill shift. the. lever. 52' tonenease and. disenga e. the .clutch s5 tnm n the spider 53,-p1ate-54 and-disk155, thelatterby means of the screws 55 being adiustable to insure proper frictional engagementbetweeirthe disk plates; Connected: with the lower end of the lever this a cable. 5.8: which passes over a -u'lley 59 toiopcrate. the lever-fill. having the adjustable weight 8i and: the -cammed-I extremity ifiz which frie tionally engages between the sword 35 and the t ause it to.

tomatically tilts when the loaded car moves to its proper position as defined by prearranged stops or buffers the form of horns. such as shown by reference, character 9 in Figure 2. When the car is unloaded through the tilting f. he. tr ck, section and pre e ab y by t e operation of an end gate, the tilting track section re urns to. s horizonta pn i n and e o ed car i then s i e th ou h a s l switching arrangement such as. I 4 onto a separate track where the train of unloaded cars is made up for return to the mine and a further loadin operation.

The c cn. of h nr ent. devi e s to ic back the unloaded individual mine car from be i able t ack. se t n. w t s fwien power to ca s h s ind v dualar o. rave t ou s proper switches to a prearranged track. Hereo p e t. as b sncustdmar t n a power and. i i anna nt. t a ev ral m e necessary to shift an empty car with sufficient. power roll through its tracking to the in, theyard. By the present artenement the se f a in l ma s ufic ent to operate the control, lever 41 to manipulate e. ki kback ca r e rmi the su e m tter of the present invention. It will be apparent pr per o it on that whenfthe loaded car travels on track sec:

o s to the. hin d rac e ons 5. the bumper Of the c wi e age. he um er e ements 2 i he kickback. arr a e nd. c use this arria e to move with the car to the position A shown. in Figure 1 In the movement of this kickback carriage the momentum of the carriage movement is competlf flficd for by thfib ger elements ill. op-

erating againstthe springs 23 as confined by the,

medial plates 22 of; the buffer frame. This. bufiing action is against the cross element 3 1, the face 3| of the cro s element 31. striking directly against th ejheads M of the buffer assembly, as thekickbackcarriage rolls with the loaded mine canonto the tilting unloading platform. After the car has moved to the positionv A as. shown.

the maximum weight being beyond the pivots. or trunnions 3 cause the tilting platform: to. swing downwardly and outwardly and in this connection it is conventional to have the end gate of h m n ar hif ing to. opening of the end ate permits. the unloadin Qi he ar nd haunloa ine of h car relieving the weight distribution'permits the shifting platform to again assume horizontal. position so that the tracks 4 and. re-in alignment. Dur-. ing the movement of the mine car to the tilting track platform thereis, as previously stated, a corresponding, movement. on the kickback carriage; and;to permit this movement the cable 38 is released and the braking action of the sword open, position. This 35 through the brake 62 is also released or at least these parts are controlled in their movement. The cable will follow the carriage as shown in Figure l at 3B and a minimum amount of slack is permitted in the cable during this operation. When the car has assumed a horizontal position after unloading a shifting of the lever i? permits rotation of the cable drum 45 through the clutch assembly 55, this drum drawing the cable 38 over the pulley 31 and urging the carriage inwardly. This movement of the carriage obviously carries with it the unloaded mine car and this car is urged onto the switch it, after proper switching operation of the latter. The speed of movement of the cable 8 and the movement of the carriage with the unloaded mine car can be regulated and varied to cause a travel of the empty mine car within any predetermined range of travel. The speed of movement of the cable and the carriage will obviously result in a more positive kickback operation of the unloaded mine car, this operation being a matter of skill for the control man in charge of operation of the device through the lever 6?. The length of travel of the kickback carriage is determined by the arrangement of the outwardly extending buffer elements 2 I, the carriage buffer plates or plungers 28 cooperating with the buffer elements 2! and 23 to assist in relieving the impact of the traveling carriage as it reaches its limit of movement.

What is claimed is:

1. In combination, a main tilting track section for supporting a mine car during unloading operation, a kickback mechanism for said mine car including a trackway arranged intermediate the main track, said trackway being parallel to and tiltable therewith, a kickback carriage adapted to travel on said trackway, said carriage being movable with said mine car when the latter is loaded, and power means for said carriage to propel the same for shifting said car on said tilting track when the car is unloaded.

2. In combination, a main tilting track section for supporting a mine car during unloading operation. a kickback mechanism for said mine car including a pair of trackways arranged between the main track sections, and a kickback carriage, said carriage including one end portion having supporting wheels for traveling on said trackway and an extension for engagement with the car end, and another end portion mounted on wheels for traveling on said trackways, a power driven cable connected to said carriage, means for moving said carriage by said cable, and means for limiting the movement of said carriage.

3. In combination, a tilting track section for supporting an end dump mine car during unloading, a pair of spaced parallel guideways carried by and swingable with said tilting track section, a kickback mechanism for said car, said mechanism including forward and rearward wheel supported frames having a centrally spaced connector, double acting spring bumper members spaced at each side of said connector and rigidly connected to said guideways whereby shock is absorbed from movement of said mechanism in either direction, and power means for moving said mechanism.

4. The substance of claim 3 characterized in that the power means is connected to the kickback through clutch and connecting cable.

5. The substance of claim 3 characterized in that the power means includes a continuously driven shaft having a clutch controlled drum for driving a cable attached to the kickback mechamsm.

6. A kickback mechanism including spaced parallel guideways, a carriage arranged for forward and rearward movement on said guideways including spaced front and rear wheel supported end portions, bumper means fixed intermediate the guideways and the end portions of said carriage for engaging said end portions during the travel of the carriage on said guideways, a continuously driven power means for moving said carriage on its guideways, means including a clutch connecting the power means and said carriage, and manual means for operating said clutch.

'7. The substance of claim 6 characterized in that the carriage includes a pivoted sword member, and the cable is guided over a pulley mounted on the sword pivot.

8. The substance of claim 6 characterized in that the bumper is formed of a pair of spaced parallel sliding plungers having springs opposing the plunger movement in both directions.

9. The substance of claim 6 characterized in that the carriage includes spaced bumper elements for receiving the shock of impact with a mine car.

10. In a kickback dump for mine cars, the combination of 'a hinged track section, a supporting platform for the hinged track section, a pair of spaced guideways extending beyond the ends Of said platform, a carriage assembly having roller supports for traveling along said guideway, said carriage including front and rear sections, bumper structures for limiting the carriage movement in each direction, power means for moving said carriage, and control means for said power means.

11. In combination, a tilting track section for supporting a mine car during unloading operation including means for locking same against tilting movement, a kickback mechanism for said mine car including a guideway arranged between the tilting track sections, a kickback carriage arranged for forward and rearward movement on said guideway and including an extension for engaging with the car end, upwardly extending spaced end portions for said carriage, a double acting spring bumper carried by the tilting track section and positioned for abutment with the spaced end portions of said carriage to limit the movement of the latter in both directions, a power driven cable connected to said carriage, a clutch connecting said cable with its source of power, and means for operating said clutch and for releasing said tilting track section to permit its hinged movement for a car dumping operation.

12. The substance of claim 11, characterized in that the clutch operatin means simultaneously operates the locking means for the tilting track section.

MARK K. MARLOWE. LAWRENCE DAUGHERTY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,221,662 Boggs Apr. 3, 1917 

